Lexus IS250 IS220d GSE20 ALE20 - SEAT
FRONT POWER SEAT LUMBAR SWITCH - INSPECTION
1. INSPECT FRONT POWER SEAT LUMBAR SWITCH LH |

Measure the resistance between the terminals when the switch is operated
- Standard resistance:
Tester Connection Switch Condition Specified Condition 4 (E) - 3 (R) HOLD Below 1 Ω 2 (B) - 5 (H) HOLD Below 1 Ω 4 (E) - 3 (R) OFF Below 1 Ω 5 (H) - 1 (E) OFF Below 1 Ω 2 (B) - 3 (R) RELEASE Below 1 Ω 5 (H) - 1 (E) RELEASE Below 1 Ω
If the result is not as specified, replace the switch.
2. INSPECT FRONT POWER SEAT LUMBAR SWITCH RH |

Measure the resistance between the terminals when the switch is operated.
- Standard resistance:
Tester Connection Switch Condition Specified Condition 1 (GND) - 5 (R) HOLD Below 1 Ω 2 (B) - 3 (H) HOLD Below 1 Ω 1 (GND) - 5 (R) OFF Below 1 Ω 3 (H) - 4 (E) OFF Below 1 Ω 3 (B) - 5 (R) RELEASE Below 1 Ω 3 (H) - 4 (E) RELEASE Below 1 Ω
If the result is not as specified, replace switch.